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Improved mechanical properties and chemical durability by modifying the float glass composition and thermo-chemical strengthening for photovoltaic cover glass
RISE - Research Institutes of Sweden, Built Environment, Building Technology. (Glass)
RISE - Research Institutes of Sweden, Built Environment, Building Technology. (Glass)
RISE - Research Institutes of Sweden, Built Environment, Building Technology. (Glass)
Johnson Matthey Technology Centre.
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2017 (English)Conference paper, (Refereed)
Abstract [en]

Solar energy is promising renewable energy where glass is an important material and have a significant impact on the efficiency of the photovoltaic (PV) module. The cover glass of PV-modules constitutes a large part of the total weight of the unit. In a recent Solar-ERA.NET project, LIMES (www.limes.nu), have we been aiming towards developing 1 mm thin glass for PV modules by improving the indentation mechanical properties and by investigating a novel thermo-chemical strengthening method.

Starting from traditional soda-lime-silicate float composition different components was studied in a DoE fashion. The mechanical properties were studied using nano- and microindentation, the chemical durability by P98 analysis and weathering experiments. The findings resulted in a suggested composition for improving the properties of float glass by adding small amounts of zinc and titanium oxide as well as increasing the amount of aluminum and magnesium oxide. The components found to improve the chemical resistance were alumina, zirconia, zinc, lanthanum and titanium oxide. The surface hardness, crack- and scratch resistance were improved when magnesia was replaced with zinc oxide. When magnesia was replaced with titania, the hardness was increased.

Some results from the thermo-chemical strengthening experiments will be presented. Heating and quenching in a reactive gas atmosphere using aluminum precursors have resulted in chemically modified surface in addition to the thermal strengthening.

Place, publisher, year, edition, pages
2017.
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-30077OAI: oai:DiVA.org:ri-30077DiVA: diva2:1120579
Conference
7th International Workshop on Flow and Fracture of Advanced Glasses (FFAG7)
Projects
Light Innovative Materials for Enhanced Solar Efficiency (LIMES)
Funder
Swedish Energy Agency, P38349-1
Available from: 2017-07-06 Created: 2017-07-06 Last updated: 2017-07-07Bibliographically approved

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